Kolkata air quality
Updated 26/10, 09:30
Current AQI
US EPA scale · observed at 09:30
121
Unhealthy for sensitive groupsChildren, older adults and people with heart or lung disease should reduce outdoor activity.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 34,5 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 35,5 µg/m³ | Particles ≤ 10 µm |
| O₃ | 165 µg/m³ | Ozone |
| NO₂ | 9,5 µg/m³ | Nitrogen dioxide |
| SO₂ | 24,6 µg/m³ | Sulphur dioxide |
| CO | 616 µg/m³ | Carbon monoxide |
AQI, next 24 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 09:30 | 121 | Unhealthy for sensitive groups |
| 10:30 | 120 | Unhealthy for sensitive groups |
| 11:30 | 120 | Unhealthy for sensitive groups |
| 12:30 | 119 | Unhealthy for sensitive groups |
| 13:30 | 125 | Unhealthy for sensitive groups |
| 14:30 | 154 | Unhealthy |
| 15:30 | 174 | Unhealthy |
| 16:30 | 186 | Unhealthy |
| 17:30 | 191 | Unhealthy |
| 18:30 | 186 | Unhealthy |
| 19:30 | 174 | Unhealthy |
| 20:30 | 155 | Unhealthy |
| 21:30 | 128 | Unhealthy for sensitive groups |
| 22:30 | 117 | Unhealthy for sensitive groups |
| 23:30 | 120 | Unhealthy for sensitive groups |
| 00:30 | 123 | Unhealthy for sensitive groups |
| 01:30 | 127 | Unhealthy for sensitive groups |
| 02:30 | 130 | Unhealthy for sensitive groups |
| 03:30 | 132 | Unhealthy for sensitive groups |
| 04:30 | 134 | Unhealthy for sensitive groups |
| 05:30 | 135 | Unhealthy for sensitive groups |
| 06:30 | 136 | Unhealthy for sensitive groups |
| 07:30 | 136 | Unhealthy for sensitive groups |
| 08:30 | 136 | Unhealthy for sensitive groups |